A powerful right-handed pitcher, Schwarz starred for St. Louis University from 1975 to 1978. He holds the SLU career record for complete games, and is fourth in career wins. He ranks in the Top Ten in games started, innings pitched, strikeouts, and ERA. In 1975 and 1976, Schwarz was named The Most Valuable Pitcher of the Tournament of Champions. His SLU team won the tournament in 1975 and finished second in 1976. He pitched a perfect game at the NBC tournament in 1976. In 2013, Schwarz was inducted into the St. Louis University Baseball Hall of Fame. He played for the Southwest Kiwanis in the early 1970s. From 1971 to 1974, Schwarz pitched for St. Mary’s High School. During that same time, he also pitched for the Anheuser-Busch American Legion team. Schwarz was a pitcher for Borbein-Young in 1977 and 1978. He pitched for St. Margaret of Scotland from 1978 to 1980, helping his team win the CYC championship in 1978. He became a coach and umpire after his playing days ended. He coached the Anheuser-Busch American Legion team from 1980 to 1983, winning one District 12 title. He coached the Crestwood American Legion team from 2005 to 2011. Schwarz was a CYC coach and manager for many years. He was a CYC umpire for 15 years. He umpired high school games from 2006 to 2015.